From mboxrd@z Thu Jan 1 00:00:00 1970 From: Milan Kocian Subject: Difference between device statistics from ifconfig and ip -s l l Date: Wed, 17 Oct 2007 11:27:00 +0200 Message-ID: <20071017092659.GA16356@wq.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: netdev@vger.kernel.org Return-path: Received: from gw-sitel.lam.cz ([212.71.129.172]:40168 "EHLO nt.wq.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753074AbXJQJ1I (ORCPT ); Wed, 17 Oct 2007 05:27:08 -0400 Received: from milon by nt.wq.cz with local (Exim 4.68) (envelope-from ) id 1Ii5B6-0005hx-4r for netdev@vger.kernel.org; Wed, 17 Oct 2007 11:27:00 +0200 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org hello, see dropped packets, please: sit:~# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:04:23:D6:D5:DE UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:522284892 errors:0 dropped:16800 overruns:0 frame:0 TX packets:506064445 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1405350664 (1.3 GiB) TX bytes:4082649020 (3.8 GiB) Base address:0xac00 Memory:ff6e0000-ff700000 see via ip l l (here are no dropped packets): sit:~# ip -s l l dev eth0 2: eth0: mtu 1500 qdisc htb qlen 1000 link/ether 00:04:23:d6:d5:de brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 2494988681 523755694 0 0 0 57458 TX: bytes packets errors dropped carrier collsns 453184821 507470461 0 0 0 0 but see more detailed stats (dropped packet are as missed in RX errors ?!): sit:~# ip -s -s l l dev eth0 2: eth0: mtu 1500 qdisc htb qlen 1000 link/ether 00:04:23:d6:d5:de brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 2752159866 524110163 0 0 0 57485 RX errors: length crc frame fifo missed 0 0 0 0 16800 TX: bytes packets errors dropped carrier collsns 607359337 507807361 0 0 0 0 TX errors: aborted fifo window heartbeat 0 0 0 0 Is this bug or feature ? From my point of view is somewhere lost any sum. Or is it driver dependent? Kernel 2.6.23.1 (in 2.6.20.20 is the same behavior), driver e1000. iproute2-ss070313; net-tools 1.60, ifconfig 1.42 (2001-04-13) Regards, -- Milan Kocian